2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 2 Hours
Difficulty Level:
Simple installation for anyone.
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Flowmaster American Thunder Stainless Steel Dual Exhaust System with Polished Tips; Side/Rear Exit (99-06 4.8L/5.3L Sierra 1500 Extended Cab w/ 6.50-Foot Standard Box)Find parts that fit my vehicle
Item S531650
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$887.36
1 Reviews
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-10% $887.36 Was $985.95
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Allows Superior Gas Flow
- Moderate/Aggressive Sound
- Three-Inch, Mandrel-Bent, 16-Gauge Stainless Steel Tubing Construction
- Dual, 3-Inch, Polished Stainless Steel Tips
- Side/Rear Exit
- Super 40 Series Performance Muffler
- Easy Installation with Supplied Hangers and Hardware
- Limited 3-Year Warranty
- Fits 1999-2006 4.8L/5.3L Silverado 1500 Extended Cab Models with Standard Box
| Brand | Flowmaster |
| Exhaust System Type | Cat-Back System |
| Exhaust Tip Finish | Chrome, Polished |
| Exhaust Tubing Diameter | 3.00 Inch |
| Exhaust Material | Stainless Steel |
| Exhaust Tip Outlet Style | Dual |
| Exhaust Exit Location | Passenger Side - After Tire |
| Exhaust Loudness | Moderate |
Description
Boost Performance and Sound. Get improved mileage, power and throttle response for your Silverado 1500, and have the added convenience of keeping the factory catalytic converter by installing a Flowmaster American Thunder Stainless Steel Dual Exhaust System with Polished Tips; Side/Rear Ext. Not only will this cat-back exhaust increase torque and horsepower, it will add a deep and aggressive rumble that will make you feel as if you're about to hit the NASCAR race track.
Moderate-to-Aggressive Exterior Exhaust Tone. The Flowmaster American Thunder Stainless Steel Dual Exhaust delivers a moderate-to-aggressive tone that can be appreciated on both the interior and exterior, and is best suited for the Silverado enthusiast who wants his or her presence to be known when off-roading, or on daily rides on the street.
Stainless Steel Construction. Flowmaster manufactures and designs its cat-back exhaust from mandrel-bent, 16-gauge, 2-1/2-inch stainless steel tubing made for added durability and corrosion resistance. This Flowmaster American Thunder Cat-Back Exhaust features dual 3-inch, polished tips, a side/rear exit and a Super 40 Series Performance Muffler for superb exhaust flow.
Application. This Flowmaster American Thunder Stainless Steel Dual Exhaust System with Polished Tips; Middle Side Exit is designed to fit 1999-2006 4.8L/5.3L Silverado 1500 Extended Cab models with Standard Box.
Fitment:
- 1999 GMC Sierra 1500
- 2000 GMC Sierra 1500
- 2001 GMC Sierra 1500
- 2002 GMC Sierra 1500
- 2003 GMC Sierra 1500
- 2004 GMC Sierra 1500
- 2005 GMC Sierra 1500
- 2006 GMC Sierra 1500
Flowmaster 817428
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Muffler Assembly
- (1) Tailpipe Assembly
- Installation Hardware
5.0
Customer Reviews (1)
Reviews of Flowmaster Exhaust products have an average rating of 4.7 out of 5
Questions & Answers
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Will It Fit My Sierra 1500
- 4.8L V8 - 99, 00, 01, 02, 03, 04, 05, 06
- 5.3L V8 - 99, 00, 01, 02, 03, 04, 05, 06
